common/spl/spl_mmc.c

   1 /*
   2  * (C) Copyright 2010
   3  * Texas Instruments, <www.ti.com>
   4  *
   5  * Aneesh V <aneesh@ti.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9 #include <common.h>
  10 #include <dm.h>
  11 #include <spl.h>
  12 #include <linux/compiler.h>
  13 #include <asm/u-boot.h>
  14 #include <errno.h>
  15 #include <mmc.h>
  16 #include <image.h>
  17
  18 DECLARE_GLOBAL_DATA_PTR;
  19
  20 static int mmc_load_image_raw_sector(struct mmc *mmc, unsigned long sector)
  21 {
  22         unsigned long count;
  23         u32 image_size_sectors;
  24         struct image_header *header;
  25
  26         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  27                                          sizeof(struct image_header));
  28
  29         /* read image header to find the image size & load address */
  30         count = mmc->block_dev.block_read(0, sector, 1, header);
  31         debug("read sector %lx, count=%lu\n", sector, count);
  32         if (count == 0)
  33                 goto end;
  34
  35         if (image_get_magic(header) != IH_MAGIC) {
  36                 puts("bad magic\n");
  37                 return -1;
  38         }
  39
  40         spl_parse_image_header(header);
  41
  42         /* convert size to sectors - round up */
  43         image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) /
  44                              mmc->read_bl_len;
  45
  46         /* Read the header too to avoid extra memcpy */
  47         count = mmc->block_dev.block_read(0, sector, image_size_sectors,
  48                                           (void *)(ulong)spl_image.load_addr);
  49         debug("read %x sectors to %x\n", image_size_sectors,
  50               spl_image.load_addr);
  51
  52 end:
  53         if (count == 0) {
  54 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  55                 puts("spl: mmc block read error\n");
  56 #endif
  57                 return -1;
  58         }
  59
  60         return 0;
  61 }
  62
  63 #ifdef CONFIG_DM_MMC
  64 static int spl_mmc_find_device(struct mmc **mmc)
  65 {
  66         struct udevice *dev;
  67         int err;
  68
  69         err = mmc_initialize(NULL);
  70         if (err) {
  71 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  72                 printf("spl: could not initialize mmc. error: %d\n", err);
  73 #endif
  74                 return err;
  75         }
  76
  77         err = uclass_get_device(UCLASS_MMC, 0, &dev);
  78         if (err) {
  79 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  80                 printf("spl: could not find mmc device. error: %d\n", err);
  81 #endif
  82                 return err;
  83         }
  84
  85         *mmc = NULL;
  86         *mmc = mmc_get_mmc_dev(dev);
  87         return *mmc != NULL ? 0 : -ENODEV;
  88 }
  89 #else
  90 static int spl_mmc_find_device(struct mmc **mmc)
  91 {
  92         int err;
  93
  94         err = mmc_initialize(gd->bd);
  95         if (err) {
  96 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  97                 printf("spl: could not initialize mmc. error: %d\n", err);
  98 #endif
  99                 return err;
 100         }
 101
 102         /* We register only one device. So, the dev id is always 0 */
 103         *mmc = find_mmc_device(0);
 104         if (!*mmc) {
 105 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 106                 puts("spl: mmc device not found\n");
 107 #endif
 108                 return -ENODEV;
 109         }
 110
 111         return 0;
 112 }
 113 #endif
 114
 115 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
 116 static int mmc_load_image_raw_partition(struct mmc *mmc, int partition)
 117 {
 118         disk_partition_t info;
 119         int err;
 120
 121         err = get_partition_info(&mmc->block_dev, partition, &info);
 122         if (err) {
 123 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 124                 puts("spl: partition error\n");
 125 #endif
 126                 return -1;
 127         }
 128
 129 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR
 130         return mmc_load_image_raw_sector(mmc, info.start +
 131                                          CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 132 #else
 133         return mmc_load_image_raw_sector(mmc, info.start);
 134 #endif
 135 }
 136 #endif
 137
 138 #ifdef CONFIG_SPL_OS_BOOT
 139 static int mmc_load_image_raw_os(struct mmc *mmc)
 140 {
 141         unsigned long count;
 142
 143         count = mmc->block_dev.block_read(0,
 144                 CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
 145                 CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
 146                 (void *) CONFIG_SYS_SPL_ARGS_ADDR);
 147         if (count == 0) {
 148 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 149                 puts("spl: mmc block read error\n");
 150 #endif
 151                 return -1;
 152         }
 153
 154         return mmc_load_image_raw_sector(mmc,
 155                 CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
 156 }
 157 #endif
 158
 159 void spl_mmc_load_image(void)
 160 {
 161         struct mmc *mmc;
 162         u32 boot_mode;
 163         int err = 0;
 164         __maybe_unused int part;
 165
 166         if (spl_mmc_find_device(&mmc))
 167                 hang();
 168
 169         err = mmc_init(mmc);
 170         if (err) {
 171 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 172                 printf("spl: mmc init failed with error: %d\n", err);
 173 #endif
 174                 hang();
 175         }
 176
 177         boot_mode = spl_boot_mode();
 178         switch (boot_mode) {
 179         case MMCSD_MODE_RAW:
 180                 debug("spl: mmc boot mode: raw\n");
 181
 182 #ifdef CONFIG_SPL_OS_BOOT
 183                 if (!spl_start_uboot()) {
 184                         err = mmc_load_image_raw_os(mmc);
 185                         if (!err)
 186                                 return;
 187                 }
 188 #endif
 189 #if defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION)
 190                 err = mmc_load_image_raw_partition(mmc,
 191                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 192                 if (!err)
 193                         return;
 194 #elif defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR)
 195                 err = mmc_load_image_raw_sector(mmc,
 196                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 197                 if (!err)
 198                         return;
 199 #endif
 200                 break;
 201         case MMCSD_MODE_FS:
 202                 debug("spl: mmc boot mode: fs\n");
 203
 204 #ifdef CONFIG_SYS_MMCSD_FS_BOOT_PARTITION
 205 #ifdef CONFIG_SPL_FAT_SUPPORT
 206 #ifdef CONFIG_SPL_OS_BOOT
 207                 if (!spl_start_uboot()) {
 208                         err = spl_load_image_fat_os(&mmc->block_dev,
 209                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
 210                         if (!err)
 211                                 return;
 212                 }
 213 #endif
 214 #ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
 215                 err = spl_load_image_fat(&mmc->block_dev,
 216                                          CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 217                                          CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 218                 if (!err)
 219                         return;
 220 #endif
 221 #endif
 222 #ifdef CONFIG_SPL_EXT_SUPPORT
 223 #ifdef CONFIG_SPL_OS_BOOT
 224                 if (!spl_start_uboot()) {
 225                         err = spl_load_image_ext_os(&mmc->block_dev,
 226                                 CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
 227                         if (!err)
 228                                 return;
 229                 }
 230 #endif
 231 #ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
 232                 err = spl_load_image_ext(&mmc->block_dev,
 233                                          CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
 234                                          CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
 235                 if (!err)
 236                         return;
 237 #endif
 238 #endif
 239 #endif
 240                 break;
 241 #ifdef CONFIG_SUPPORT_EMMC_BOOT
 242         case MMCSD_MODE_EMMCBOOT:
 243                 /*
 244                  * We need to check what the partition is configured to.
 245                  * 1 and 2 match up to boot0 / boot1 and 7 is user data
 246                  * which is the first physical partition (0).
 247                  */
 248                 part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
 249
 250                 if (part == 7)
 251                         part = 0;
 252
 253                 if (mmc_switch_part(0, part)) {
 254 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 255                         puts("spl: mmc partition switch failed\n");
 256 #endif
 257                         hang();
 258                 }
 259
 260 #ifdef CONFIG_SPL_OS_BOOT
 261                 if (!spl_start_uboot()) {
 262                         err = mmc_load_image_raw_os(mmc);
 263                         if (!err)
 264                                 return;
 265                 }
 266 #endif
 267 #if defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION)
 268                 err = mmc_load_image_raw_partition(mmc,
 269                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
 270                 if (!err)
 271                         return;
 272 #elif defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR)
 273                 err = mmc_load_image_raw_sector(mmc,
 274                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 275                 if (!err)
 276                         return;
 277 #endif
 278                 break;
 279 #endif
 280         case MMCSD_MODE_UNDEFINED:
 281 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 282         default:
 283                 puts("spl: mmc: wrong boot mode\n");
 284 #endif
 285         }
 286
 287         hang();
 288 }